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std::get(std::array)

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< cpp‎ | container‎ | array

 
 
 
std::array
Funções de membro
Original:
Member functions
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acesso. Elemento
Original:
Element access
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array::at
array::operator[]
array::front
array::back
array::data
Iteradores
Original:
Iterators
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array::begin
array::cbegin
array::end
array::cend
array::rbegin
array::crbegin
array::rend
array::crend
Capacidade
Original:
Capacity
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array::empty
array::size
array::max_size
Modificadores
Original:
Modifiers
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array::fill
array::swap
Não-membros funções
Original:
Non-member functions
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get
swap
Classes auxiliares
Original:
Helper classes
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tuple_size
tuple_element
 
template<size_t I, class T, size_t N >
T& get( array<T,N>& a );
(1) (a partir do C++ 11)
template<size_t I, class T, size_t N >
T&& get( array<T,N>&& a );
(2) (a partir do C++ 11)
template<size_t I, class T, size_t N >
const T& get( const array<T,N>& a );
(3) (a partir do C++ 11)
Extrai o elemento elemento Ith da matriz.
Original:
Extracts the Ith element element from the array.
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I deve ser um valor inteiro em [0, N) alcance. Esta é aplicada em tempo de compilação ao invés de at() ou operator[]().
Original:
I must be an integer value in range [0, N). This is enforced at compile time as opposed to at() or operator[]().
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Índice

[editar] Parâmetros

a -
matriz cujos conteúdos para extrair
Original:
array whose contents to extract
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[editar] Valor de retorno

1)
Referência para o elemento de Ith a.
Original:
Reference to the Ith element of a.
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2)
Rvalue referência para o elemento de Ith a, a menos que o elemento é de lvalue tipo de referência, neste caso, é devolvido lvalue referência.
Original:
Rvalue reference to the Ith element of a, unless the element is of lvalue reference type, in which case lvalue reference is returned.
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3)
Const referência ao elemento Ith de a.
Original:
Const reference to the Ith element of a.
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[editar] Exceções

noexcept specification:  
noexcept
  (a partir do C++ 11)

[editar] Exemplo

#include <iostream>
#include <array>
 
int main()
{
    std::array<int, 3> arr;
 
    // set values:
    std::get<0>(arr) = 1;
    std::get<1>(arr) = 2;
    std::get<2>(arr) = 3;
 
    // get values:
    std::cout << "(" << std::get<0>(arr) << ", " << std::get<1>(arr)
              << ", " << std::get<2>(arr) << ")\n";
}

Output:

(1, 2, 3)

[editar] Veja também

acessar o elemento especificado
Original:
access specified element
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(função pública membro) [edit]
acessar o elemento especificado com verificação de limites
Original:
access specified element with bounds checking
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(função pública membro) [edit]
tupla acessa elemento especificado
Original:
tuple accesses specified element
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(modelo de função) [edit]
acede a um elemento de um pair
Original:
accesses an element of a pair
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(modelo de função) [edit]